Hello Mitch, Reread my e-mail... I said 'package', not 'footprint'. Chris said... "Same question with package types....", and that was what I was answering. Regards, James Jackson Oztronics > Hi James, > > I've never got a "footprint" pattern from JEDEC, have you? I've gone to > the JEDEC site to see package dimensions, but I never understood them to > have land patterns or footprints for the packages. I've never known them > to be invloved with the manufacturing side of the packages, only the > packages themselves. Am I wrong? If I am, would someone please tell me > where they hide the footprints? > > I think it's great that an organization is finally trying to convince > the manufacturers to "use" a standard package, and I'm still hoping IPC > can convince all us designers to use their land pattern standards. We'll > see. ;) > > TIA. > > Mitch > > ---------Included Message---------- > > Date: Wed, 15 Aug 2001 21:39:39 -0500 > > From: "James Jackson" <[log in to unmask]> > > Reply-To: ""(Designers Council Forum)"" > <[log in to unmask]>, "James Jackson" <[log in to unmask]> > > To: <[log in to unmask]> > > Subject: Re: [DC] SM footprints and standards > > > > Chris, > > > > I believe that JEDEC is the controlling organization for the > package styles here in the U.S. > > > > You will see several references in the IPC-SM-782 to this. > > > > I think that the way it works, is that a company creates a new > package style, and submits it to the JEDEC committee, where it is voted > on and when approved becomes an 'official' pattern. > > > > The Japanese have their equivalent to the JEDEC (the EIAJ) - and > this causes some pattern differences, at times - but the companies are > now realizing the benefits of 'playing together' when creating new > patterns. > > > > Regards, > > > > James Jackson > > Oztronics > > > > > > I have several links to surface mount standards, but what I > would like to know > > is who actually makes the standards for these footprints? > > Is it IC makers and they are adopted such organizations as > IPC? > > Are the IPC standards THE standard or are they a collection of > > others? > > > > I understand there are some European standards as well. Who > > controls these? (These may be a Gary questions) > > > > I've found standards or actually descriptions at several > different sites and > > want to ensure all are correct. > > > > Same question with package types.... > > > > > > CR > > > ---------End of Included Message---------- > _____________________________________________________________ > Tired of limited space on Yahoo and Hotmail? > Free 100 Meg email account available at http://www.dacafe.com > > > --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------